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sdrangel/plugins/channeltx/modatv/atvmod.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QDebug>
#include <time.h>
#include "opencv2/imgproc/imgproc.hpp"
#include "dsp/upchannelizer.h"
#include "atvmod.h"
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureATVMod, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureImageFileName, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureVideoFileName, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureVideoFileSourceSeek, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureVideoFileSourceStreamTiming, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgReportVideoFileSourceStreamTiming, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgReportVideoFileSourceStreamData, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureCameraIndex, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgReportCameraData, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureOverlayText, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgConfigureShowOverlayText, Message)
MESSAGE_CLASS_DEFINITION(ATVMod::MsgReportEffectiveSampleRate, Message)
const float ATVMod::m_blackLevel = 0.3f;
const float ATVMod::m_spanLevel = 0.7f;
const int ATVMod::m_levelNbSamples = 10000; // every 10ms
const int ATVMod::m_nbBars = 6;
const int ATVMod::m_cameraFPSTestNbFrames = 100;
const int ATVMod::m_ssbFftLen = 1024;
ATVMod::ATVMod() :
m_modPhasor(0.0f),
m_evenImage(true),
m_tvSampleRate(1000000),
m_settingsMutex(QMutex::Recursive),
m_horizontalCount(0),
m_lineCount(0),
m_imageOK(false),
m_videoFPSq(1.0f),
m_videoFPSCount(0.0f),
m_videoPrevFPSCount(0),
m_videoEOF(false),
m_videoOK(false),
m_cameraIndex(-1),
m_showOverlayText(false),
m_SSBFilter(0),
m_DSBFilter(0),
m_SSBFilterBuffer(0),
m_DSBFilterBuffer(0),
m_SSBFilterBufferIndex(0),
m_DSBFilterBufferIndex(0)
{
setObjectName("ATVMod");
scanCameras();
m_config.m_outputSampleRate = 1000000;
m_config.m_inputFrequencyOffset = 0;
m_config.m_rfBandwidth = 1000000;
m_config.m_atvModInput = ATVModInputHBars;
m_config.m_atvStd = ATVStdPAL625;
m_config.m_nbLines = 625;
m_config.m_fps = 25;
m_SSBFilter = new fftfilt(0, m_config.m_rfBandwidth / m_config.m_outputSampleRate, m_ssbFftLen);
m_SSBFilterBuffer = new Complex[m_ssbFftLen>>1]; // filter returns data exactly half of its size
memset(m_SSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen>>1));
m_DSBFilter = new fftfilt((2.0f * m_config.m_rfBandwidth) / m_config.m_outputSampleRate, 2 * m_ssbFftLen);
m_DSBFilterBuffer = new Complex[m_ssbFftLen];
memset(m_DSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen));
applyStandard();
m_interpolatorDistanceRemain = 0.0f;
m_interpolatorDistance = 1.0f;
apply(true);
m_movingAverage.resize(16, 0);
}
ATVMod::~ATVMod()
{
if (m_video.isOpened()) m_video.release();
releaseCameras();
}
void ATVMod::configure(MessageQueue* messageQueue,
Real rfBandwidth,
Real rfOppBandwidth,
ATVStd atvStd,
int nbLines,
int fps,
ATVModInput atvModInput,
Real uniformLevel,
ATVModulation atvModulation,
bool videoPlayLoop,
bool videoPlay,
bool cameraPlay,
bool channelMute,
bool invertedVideo)
{
Message* cmd = MsgConfigureATVMod::create(
rfBandwidth,
rfOppBandwidth,
atvStd,
nbLines,
fps,
atvModInput,
uniformLevel,
atvModulation,
videoPlayLoop,
videoPlay,
cameraPlay,
channelMute,
invertedVideo);
messageQueue->push(cmd);
}
void ATVMod::pullAudio(int nbSamples)
{
}
void ATVMod::pull(Sample& sample)
{
if (m_running.m_channelMute)
{
sample.m_real = 0.0f;
sample.m_imag = 0.0f;
return;
}
Complex ci;
m_settingsMutex.lock();
if (m_tvSampleRate == m_running.m_outputSampleRate) // no interpolation nor decimation
{
modulateSample();
pullFinalize(m_modSample, sample);
}
else
{
if (m_interpolatorDistance > 1.0f) // decimate
{
modulateSample();
while (!m_interpolator.decimate(&m_interpolatorDistanceRemain, m_modSample, &ci))
{
modulateSample();
}
}
else
{
if (m_interpolator.interpolate(&m_interpolatorDistanceRemain, m_modSample, &ci))
{
modulateSample();
}
}
m_interpolatorDistanceRemain += m_interpolatorDistance;
pullFinalize(ci, sample);
}
}
void ATVMod::pullFinalize(Complex& ci, Sample& sample)
{
ci *= m_carrierNco.nextIQ(); // shift to carrier frequency
m_settingsMutex.unlock();
Real magsq = ci.real() * ci.real() + ci.imag() * ci.imag();
magsq /= (1<<30);
m_movingAverage.feed(magsq);
sample.m_real = (FixReal) ci.real();
sample.m_imag = (FixReal) ci.imag();
}
void ATVMod::modulateSample()
{
Real t;
pullVideo(t);
calculateLevel(t);
t = m_running.m_invertedVideo ? 1.0f - t : t;
switch (m_running.m_atvModulation)
{
case ATVModulationFM: // FM half bandwidth deviation
m_modPhasor += (t - 0.5f) * M_PI;
if (m_modPhasor > 2.0f * M_PI) m_modPhasor -= 2.0f * M_PI; // limit growth
if (m_modPhasor < 2.0f * M_PI) m_modPhasor += 2.0f * M_PI; // limit growth
m_modSample.real(cos(m_modPhasor) * 29204.0f); // -1 dB
m_modSample.imag(sin(m_modPhasor) * 29204.0f);
break;
case ATVModulationLSB:
case ATVModulationUSB:
m_modSample = modulateSSB(t);
m_modSample *= 29204.0f;
break;
case ATVModulationVestigialLSB:
case ATVModulationVestigialUSB:
m_modSample = modulateVestigialSSB(t);
m_modSample *= 29204.0f;
break;
case ATVModulationAM: // AM 90%
default:
m_modSample.real((t*1.8f + 0.1f) * 16384.0f); // modulate and scale zero frequency carrier
m_modSample.imag(0.0f);
}
}
Complex& ATVMod::modulateSSB(Real& sample)
{
int n_out;
Complex ci(sample, 0.0f);
fftfilt::cmplx *filtered;
n_out = m_SSBFilter->runSSB(ci, &filtered, m_running.m_atvModulation == ATVModulationUSB);
if (n_out > 0)
{
memcpy((void *) m_SSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
m_SSBFilterBufferIndex = 0;
}
m_SSBFilterBufferIndex++;
return m_SSBFilterBuffer[m_SSBFilterBufferIndex-1];
}
Complex& ATVMod::modulateVestigialSSB(Real& sample)
{
int n_out;
Complex ci(sample, 0.0f);
fftfilt::cmplx *filtered;
n_out = m_DSBFilter->runAsym(ci, &filtered, m_running.m_atvModulation == ATVModulationVestigialUSB);
if (n_out > 0)
{
memcpy((void *) m_DSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
m_DSBFilterBufferIndex = 0;
}
m_DSBFilterBufferIndex++;
return m_DSBFilterBuffer[m_DSBFilterBufferIndex-1];
}
void ATVMod::pullVideo(Real& sample)
{
int iLine = m_lineCount % m_nbLines2;
if (m_lineCount < m_nbLines2) // even image or non interlaced
{
if (iLine < m_nbSyncLinesHead)
{
pullVSyncLine(sample);
}
else if (iLine < m_nbSyncLinesHead + m_nbBlankLines)
{
pullVSyncLine(sample); // pull black line
}
else if (iLine < m_nbLines2 - 3)
{
pullImageLine(sample);
}
else
{
pullVSyncLine(sample);
}
}
else // odd image
{
if (iLine < m_nbSyncLinesHead - 1)
{
pullVSyncLine(sample);
}
else if (iLine < m_nbSyncLinesHead + m_nbBlankLines - 1)
{
pullVSyncLine(sample); // pull black line
}
else if (iLine < m_nbLines2 - 4)
{
pullImageLine(sample);
}
else
{
pullVSyncLine(sample);
}
}
if (m_horizontalCount < m_nbHorizPoints - 1)
{
m_horizontalCount++;
}
else
{
if (m_lineCount < m_nbLines - 1)
{
m_lineCount++;
if (m_lineCount > (m_nbLines/2)) m_evenImage = !m_evenImage;
}
else // new image
{
m_lineCount = 0;
m_evenImage = !m_evenImage;
if ((m_running.m_atvModInput == ATVModInputVideo) && m_videoOK && (m_running.m_videoPlay) && !m_videoEOF)
{
int grabOK;
int fpsIncrement = (int) m_videoFPSCount - m_videoPrevFPSCount;
// move a number of frames according to increment
// use grab to test for EOF then retrieve to preserve last valid frame as the current original frame
// TODO: handle pause (no move)
for (int i = 0; i < fpsIncrement; i++)
{
grabOK = m_video.grab();
if (!grabOK) break;
}
if (grabOK)
{
cv::Mat colorFrame;
m_video.retrieve(colorFrame);
if (!colorFrame.empty()) // some frames may not come out properly
{
if (m_showOverlayText) {
mixImageAndText(colorFrame);
}
cv::cvtColor(colorFrame, m_videoframeOriginal, CV_BGR2GRAY);
resizeVideo();
}
}
else
{
if (m_running.m_videoPlayLoop) { // play loop
seekVideoFileStream(0);
} else { // stops
m_videoEOF = true;
}
}
if (m_videoFPSCount < m_videoFPS)
{
m_videoPrevFPSCount = (int) m_videoFPSCount;
m_videoFPSCount += m_videoFPSq;
}
else
{
m_videoPrevFPSCount = 0;
m_videoFPSCount = m_videoFPSq;
}
}
else if ((m_running.m_atvModInput == ATVModInputCamera) && (m_running.m_cameraPlay))
{
ATVCamera& camera = m_cameras[m_cameraIndex]; // currently selected canera
if (camera.m_videoFPS < 0.0f) // default frame rate when it could not be obtained via get
{
time_t start, end;
cv::Mat frame;
MsgReportCameraData *report;
report = MsgReportCameraData::create(
camera.m_cameraNumber,
0.0f,
camera.m_videoWidth,
camera.m_videoHeight,
1); // open splash screen on GUI side
getOutputMessageQueue()->push(report);
int nbFrames = 0;
time(&start);
for (int i = 0; i < m_cameraFPSTestNbFrames; i++)
{
camera.m_camera >> frame;
if (!frame.empty()) nbFrames++;
}
time(&end);
double seconds = difftime (end, start);
// take a 10% guard and divide bandwidth between all cameras as a hideous hack
camera.m_videoFPS = ((nbFrames / seconds) * 0.9) / m_cameras.size();
camera.m_videoFPSq = camera.m_videoFPS / m_fps;
camera.m_videoFPSCount = camera.m_videoFPSq;
camera.m_videoPrevFPSCount = 0;
report = MsgReportCameraData::create(
camera.m_cameraNumber,
camera.m_videoFPS,
camera.m_videoWidth,
camera.m_videoHeight,
2); // close splash screen on GUI side
getOutputMessageQueue()->push(report);
}
else if (camera.m_videoFPS == 0.0f) // Hideous hack for windows
{
camera.m_videoFPS = 5.0f;
camera.m_videoFPSq = camera.m_videoFPS / m_fps;
camera.m_videoFPSCount = camera.m_videoFPSq;
camera.m_videoPrevFPSCount = 0;
MsgReportCameraData *report;
report = MsgReportCameraData::create(
camera.m_cameraNumber,
camera.m_videoFPS,
camera.m_videoWidth,
camera.m_videoHeight,
0);
getOutputMessageQueue()->push(report);
}
int fpsIncrement = (int) camera.m_videoFPSCount - camera.m_videoPrevFPSCount;
// move a number of frames according to increment
// use grab to test for EOF then retrieve to preserve last valid frame as the current original frame
cv::Mat colorFrame;
for (int i = 0; i < fpsIncrement; i++)
{
camera.m_camera >> colorFrame;
if (colorFrame.empty()) break;
}
if (!colorFrame.empty()) // some frames may not come out properly
{
if (m_showOverlayText) {
mixImageAndText(colorFrame);
}
cv::cvtColor(colorFrame, camera.m_videoframeOriginal, CV_BGR2GRAY);
resizeCamera();
}
if (camera.m_videoFPSCount < camera.m_videoFPS)
{
camera.m_videoPrevFPSCount = (int) camera.m_videoFPSCount;
camera.m_videoFPSCount += camera.m_videoFPSq;
}
else
{
camera.m_videoPrevFPSCount = 0;
camera.m_videoFPSCount = camera.m_videoFPSq;
}
}
}
m_horizontalCount = 0;
}
}
void ATVMod::calculateLevel(Real& sample)
{
if (m_levelCalcCount < m_levelNbSamples)
{
m_peakLevel = std::max(std::fabs(m_peakLevel), sample);
m_levelSum += sample * sample;
m_levelCalcCount++;
}
else
{
qreal rmsLevel = std::sqrt(m_levelSum / m_levelNbSamples);
//qDebug("NFMMod::calculateLevel: %f %f", rmsLevel, m_peakLevel);
emit levelChanged(rmsLevel, m_peakLevel, m_levelNbSamples);
m_peakLevel = 0.0f;
m_levelSum = 0.0f;
m_levelCalcCount = 0;
}
}
void ATVMod::start()
{
qDebug() << "ATVMod::start: m_outputSampleRate: " << m_config.m_outputSampleRate
<< " m_inputFrequencyOffset: " << m_config.m_inputFrequencyOffset;
}
void ATVMod::stop()
{
}
bool ATVMod::handleMessage(const Message& cmd)
{
if (UpChannelizer::MsgChannelizerNotification::match(cmd))
{
UpChannelizer::MsgChannelizerNotification& notif = (UpChannelizer::MsgChannelizerNotification&) cmd;
m_config.m_outputSampleRate = notif.getSampleRate();
m_config.m_inputFrequencyOffset = notif.getFrequencyOffset();
apply();
qDebug() << "ATVMod::handleMessage: MsgChannelizerNotification:"
<< " m_outputSampleRate: " << m_config.m_outputSampleRate
<< " m_inputFrequencyOffset: " << m_config.m_inputFrequencyOffset;
return true;
}
else if (MsgConfigureATVMod::match(cmd))
{
MsgConfigureATVMod& cfg = (MsgConfigureATVMod&) cmd;
m_config.m_rfBandwidth = cfg.getRFBandwidth();
m_config.m_rfOppBandwidth = cfg.getRFOppBandwidth();
m_config.m_atvModInput = cfg.getATVModInput();
m_config.m_atvStd = cfg.getATVStd();
m_config.m_nbLines = cfg.getNbLines();
m_config.m_fps = cfg.getFPS();
m_config.m_uniformLevel = cfg.getUniformLevel();
m_config.m_atvModulation = cfg.getModulation();
m_config.m_videoPlayLoop = cfg.getVideoPlayLoop();
m_config.m_videoPlay = cfg.getVideoPlay();
m_config.m_cameraPlay = cfg.getCameraPlay();
m_config.m_channelMute = cfg.getChannelMute();
m_config.m_invertedVideo = cfg.getInvertedVideo();
apply();
qDebug() << "ATVMod::handleMessage: MsgConfigureATVMod:"
<< " m_rfBandwidth: " << m_config.m_rfBandwidth
<< " m_rfOppBandwidth: " << m_config.m_rfOppBandwidth
<< " m_atvStd: " << (int) m_config.m_atvStd
<< " m_nbLines: " << m_config.m_nbLines
<< " m_fps: " << m_config.m_fps
<< " m_atvModInput: " << (int) m_config.m_atvModInput
<< " m_uniformLevel: " << m_config.m_uniformLevel
<< " m_atvModulation: " << (int) m_config.m_atvModulation
<< " m_videoPlayLoop: " << m_config.m_videoPlayLoop
<< " m_videoPlay: " << m_config.m_videoPlay
<< " m_cameraPlay: " << m_config.m_cameraPlay
<< " m_channelMute: " << m_config.m_channelMute
<< " m_invertedVideo: " << m_config.m_invertedVideo;
return true;
}
else if (MsgConfigureImageFileName::match(cmd))
{
MsgConfigureImageFileName& conf = (MsgConfigureImageFileName&) cmd;
openImage(conf.getFileName());
return true;
}
else if (MsgConfigureVideoFileName::match(cmd))
{
MsgConfigureVideoFileName& conf = (MsgConfigureVideoFileName&) cmd;
openVideo(conf.getFileName());
return true;
}
else if (MsgConfigureVideoFileSourceSeek::match(cmd))
{
MsgConfigureVideoFileSourceSeek& conf = (MsgConfigureVideoFileSourceSeek&) cmd;
int seekPercentage = conf.getPercentage();
seekVideoFileStream(seekPercentage);
return true;
}
else if (MsgConfigureVideoFileSourceStreamTiming::match(cmd))
{
int framesCount;
if (m_videoOK && m_video.isOpened())
{
framesCount = m_video.get(CV_CAP_PROP_POS_FRAMES);;
} else {
framesCount = 0;
}
MsgReportVideoFileSourceStreamTiming *report;
report = MsgReportVideoFileSourceStreamTiming::create(framesCount);
getOutputMessageQueue()->push(report);
return true;
}
else if (MsgConfigureCameraIndex::match(cmd))
{
MsgConfigureCameraIndex& cfg = (MsgConfigureCameraIndex&) cmd;
int index = cfg.getIndex();
if (index < m_cameras.size())
{
m_cameraIndex = index;
MsgReportCameraData *report;
report = MsgReportCameraData::create(
m_cameras[m_cameraIndex].m_cameraNumber,
m_cameras[m_cameraIndex].m_videoFPS,
m_cameras[m_cameraIndex].m_videoWidth,
m_cameras[m_cameraIndex].m_videoHeight,
0);
getOutputMessageQueue()->push(report);
}
return true;
}
else if (MsgConfigureOverlayText::match(cmd))
{
MsgConfigureOverlayText& cfg = (MsgConfigureOverlayText&) cmd;
m_overlayText = cfg.getOverlayText().toStdString();
return true;
}
else if (MsgConfigureShowOverlayText::match(cmd))
{
MsgConfigureShowOverlayText& cfg = (MsgConfigureShowOverlayText&) cmd;
bool showOverlayText = cfg.getShowOverlayText();
if (!m_imageFromFile.empty())
{
m_imageFromFile.copyTo(m_imageOriginal);
if (showOverlayText) {
qDebug("ATVMod::handleMessage: overlay text");
mixImageAndText(m_imageOriginal);
} else{
qDebug("ATVMod::handleMessage: clear text");
}
resizeImage();
}
m_showOverlayText = showOverlayText;
return true;
}
else
{
return false;
}
}
void ATVMod::apply(bool force)
{
if ((m_config.m_outputSampleRate != m_running.m_outputSampleRate)
|| (m_config.m_atvStd != m_running.m_atvStd)
|| (m_config.m_nbLines != m_running.m_nbLines)
|| (m_config.m_fps != m_running.m_fps)
|| (m_config.m_rfBandwidth != m_running.m_rfBandwidth)
|| (m_config.m_atvModulation != m_running.m_atvModulation) || force)
{
int rateUnits, nbPointsPerRateUnit;
getBaseValues(m_config.m_nbLines * m_config.m_fps, rateUnits, nbPointsPerRateUnit);
m_tvSampleRate = (m_config.m_outputSampleRate / rateUnits) * rateUnits; // make sure working sample rate is a multiple of rate units
m_settingsMutex.lock();
if (m_tvSampleRate > 0)
{
m_interpolatorDistanceRemain = 0;
m_interpolatorDistance = (Real) m_tvSampleRate / (Real) m_config.m_outputSampleRate;
m_interpolator.create(32,
m_tvSampleRate,
m_config.m_rfBandwidth / getRFBandwidthDivisor(m_config.m_atvModulation),
3.0);
}
else
{
m_tvSampleRate = m_config.m_outputSampleRate;
}
m_SSBFilter->create_filter(0, m_config.m_rfBandwidth / m_tvSampleRate);
memset(m_SSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen>>1));
m_SSBFilterBufferIndex = 0;
applyStandard(); // set all timings
m_settingsMutex.unlock();
MsgReportEffectiveSampleRate *report;
report = MsgReportEffectiveSampleRate::create(m_tvSampleRate);
getOutputMessageQueue()->push(report);
}
if ((m_config.m_outputSampleRate != m_running.m_outputSampleRate)
|| (m_config.m_rfOppBandwidth != m_running.m_rfOppBandwidth)
|| (m_config.m_rfBandwidth != m_running.m_rfBandwidth)
|| (m_config.m_nbLines != m_running.m_nbLines) // difference in line period may have changed TV sample rate
|| (m_config.m_fps != m_running.m_fps) //
|| force)
{
m_settingsMutex.lock();
m_DSBFilter->create_asym_filter(m_config.m_rfOppBandwidth / m_tvSampleRate, m_config.m_rfBandwidth / m_tvSampleRate);
memset(m_DSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen));
m_DSBFilterBufferIndex = 0;
m_settingsMutex.unlock();
}
if ((m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset) ||
(m_config.m_outputSampleRate != m_running.m_outputSampleRate) || force)
{
m_settingsMutex.lock();
m_carrierNco.setFreq(m_config.m_inputFrequencyOffset, m_config.m_outputSampleRate);
m_settingsMutex.unlock();
}
m_running.m_outputSampleRate = m_config.m_outputSampleRate;
m_running.m_inputFrequencyOffset = m_config.m_inputFrequencyOffset;
m_running.m_rfBandwidth = m_config.m_rfBandwidth;
m_running.m_rfOppBandwidth = m_config.m_rfOppBandwidth;
m_running.m_atvModInput = m_config.m_atvModInput;
m_running.m_atvStd = m_config.m_atvStd;
m_running.m_nbLines = m_config.m_nbLines;
m_running.m_fps = m_config.m_fps;
m_running.m_uniformLevel = m_config.m_uniformLevel;
m_running.m_atvModulation = m_config.m_atvModulation;
m_running.m_videoPlayLoop = m_config.m_videoPlayLoop;
m_running.m_videoPlay = m_config.m_videoPlay;
m_running.m_cameraPlay = m_config.m_cameraPlay;
m_running.m_channelMute = m_config.m_channelMute;
m_running.m_invertedVideo = m_config.m_invertedVideo;
}
void ATVMod::getBaseValues(int linesPerSecond, int& sampleRateUnits, int& nbPointsPerRateUnit)
{
int i = 0;
for (; i < 100; i++)
{
if (((100+i) * linesPerSecond) % 1000 == 0)
break;
}
nbPointsPerRateUnit = (i == 100) ? 100 : 100+i;
sampleRateUnits = nbPointsPerRateUnit * linesPerSecond;
}
float ATVMod::getRFBandwidthDivisor(ATVModulation modulation)
{
switch(modulation)
{
case ATVModulationLSB:
case ATVModulationUSB:
case ATVModulationVestigialLSB:
case ATVModulationVestigialUSB:
return 1.05f;
break;
case ATVModulationAM:
case ATVModulationFM:
default:
return 2.2f;
}
}
void ATVMod::applyStandard()
{
int rateUnits, nbPointsPerRateUnit;
getBaseValues(m_config.m_nbLines * m_config.m_fps, rateUnits, nbPointsPerRateUnit);
m_pointsPerTU = m_tvSampleRate / rateUnits; // TV sample rate is already set at a multiple of rate units
m_pointsPerSync = (uint32_t) roundf(4.7f * m_pointsPerTU); // normal sync pulse (4.7 us / rateUnits)
m_pointsPerBP = (uint32_t) roundf(4.7f * m_pointsPerTU); // back porch (4.7 us / rateUnits)
m_pointsPerFP = (uint32_t) roundf(1.5f * m_pointsPerTU); // front porch (1.5 us / rateUnits)
m_pointsPerFSync = (uint32_t) roundf(2.3f * m_pointsPerTU); // equalizing pulse (2.3 us / rateUnits)
m_pointsPerImgLine = nbPointsPerRateUnit * m_pointsPerTU - m_pointsPerSync - m_pointsPerBP - m_pointsPerFP;
m_nbHorizPoints = nbPointsPerRateUnit * m_pointsPerTU; // full line
m_pointsPerHBar = m_pointsPerImgLine / m_nbBars;
m_linesPerVBar = m_nbImageLines2 / m_nbBars;
m_hBarIncrement = m_spanLevel / (float) m_nbBars;
m_vBarIncrement = m_spanLevel / (float) m_nbBars;
m_nbLines = m_config.m_nbLines;
m_nbLines2 = (m_nbLines / 2) + 1;
m_fps = m_config.m_fps * 1.0f;
switch(m_config.m_atvStd)
{
case ATVStd405: // Follows loosely the 405 lines standard
// what is left in a 64 us line for the image
m_nbImageLines = m_nbLines - 15; // lines less the total number of sync lines
m_nbImageLines2 = m_nbImageLines / 2;
m_interlaced = true;
m_nbSyncLinesHead = 5; // number of sync lines on the top of a frame
m_nbBlankLines = 7; // yields 376 lines (195 - 7) * 2
break;
case ATVStdPAL525: // Follows PAL-M standard
// what is left in a 64/1.008 us line for the image
m_nbImageLines = m_nbLines - 15;
m_nbImageLines2 = m_nbImageLines / 2;
m_interlaced = true;
m_nbSyncLinesHead = 5;
m_nbBlankLines = 15; // yields 480 lines (255 - 15) * 2
break;
case ATVStdPAL625: // Follows PAL-B/G/H standard
default:
// what is left in a 64 us line for the image
m_nbImageLines = m_nbLines - 15;
m_nbImageLines2 = m_nbImageLines / 2;
m_interlaced = true;
m_nbSyncLinesHead = 5;
m_nbBlankLines = 17; // yields 576 lines (305 - 17) * 2
}
if (m_imageOK)
{
resizeImage();
}
if (m_videoOK)
{
calculateVideoSizes();
resizeVideo();
}
calculateCamerasSizes();
}
void ATVMod::openImage(const QString& fileName)
{
m_imageFromFile = cv::imread(qPrintable(fileName), CV_LOAD_IMAGE_GRAYSCALE);
m_imageOK = m_imageFromFile.data != 0;
if (m_imageOK)
{
m_imageFromFile.copyTo(m_imageOriginal);
if (m_showOverlayText) {
mixImageAndText(m_imageOriginal);
}
resizeImage();
}
}
void ATVMod::openVideo(const QString& fileName)
{
//if (m_videoOK && m_video.isOpened()) m_video.release(); should be done by OpenCV in open method
m_videoOK = m_video.open(qPrintable(fileName));
if (m_videoOK)
{
m_videoFPS = m_video.get(CV_CAP_PROP_FPS);
m_videoWidth = (int) m_video.get(CV_CAP_PROP_FRAME_WIDTH);
m_videoHeight = (int) m_video.get(CV_CAP_PROP_FRAME_HEIGHT);
m_videoLength = (int) m_video.get(CV_CAP_PROP_FRAME_COUNT);
int ex = static_cast<int>(m_video.get(CV_CAP_PROP_FOURCC));
char ext[] = {(char)(ex & 0XFF),(char)((ex & 0XFF00) >> 8),(char)((ex & 0XFF0000) >> 16),(char)((ex & 0XFF000000) >> 24),0};
qDebug("ATVMod::openVideo: %s FPS: %f size: %d x %d #frames: %d codec: %s",
m_video.isOpened() ? "OK" : "KO",
m_videoFPS,
m_videoWidth,
m_videoHeight,
m_videoLength,
ext);
calculateVideoSizes();
m_videoEOF = false;
MsgReportVideoFileSourceStreamData *report;
report = MsgReportVideoFileSourceStreamData::create(m_videoFPS, m_videoLength);
getOutputMessageQueue()->push(report);
}
else
{
qDebug("ATVMod::openVideo: cannot open video file");
}
}
void ATVMod::resizeImage()
{
float fy = (m_nbImageLines - 2*m_nbBlankLines) / (float) m_imageOriginal.rows;
float fx = m_pointsPerImgLine / (float) m_imageOriginal.cols;
cv::resize(m_imageOriginal, m_image, cv::Size(), fx, fy);
qDebug("ATVMod::resizeImage: %d x %d -> %d x %d", m_imageOriginal.cols, m_imageOriginal.rows, m_image.cols, m_image.rows);
}
void ATVMod::calculateVideoSizes()
{
m_videoFy = (m_nbImageLines - 2*m_nbBlankLines) / (float) m_videoHeight;
m_videoFx = m_pointsPerImgLine / (float) m_videoWidth;
m_videoFPSq = m_videoFPS / m_fps;
m_videoFPSCount = m_videoFPSq;
m_videoPrevFPSCount = 0;
qDebug("ATVMod::calculateVideoSizes: factors: %f x %f FPSq: %f", m_videoFx, m_videoFy, m_videoFPSq);
}
void ATVMod::resizeVideo()
{
if (!m_videoframeOriginal.empty()) {
cv::resize(m_videoframeOriginal, m_videoFrame, cv::Size(), m_videoFx, m_videoFy); // resize current frame
}
}
void ATVMod::calculateCamerasSizes()
{
for (std::vector<ATVCamera>::iterator it = m_cameras.begin(); it != m_cameras.end(); ++it)
{
it->m_videoFy = (m_nbImageLines - 2*m_nbBlankLines) / (float) it->m_videoHeight;
it->m_videoFx = m_pointsPerImgLine / (float) it->m_videoWidth;
it->m_videoFPSq = it->m_videoFPS / m_fps;
it->m_videoFPSCount = it->m_videoFPSq;
it->m_videoPrevFPSCount = 0;
qDebug("ATVMod::calculateCamerasSizes: [%d] factors: %f x %f FPSq: %f", (int) (it - m_cameras.begin()), it->m_videoFx, it->m_videoFy, it->m_videoFPSq);
}
}
void ATVMod::resizeCameras()
{
for (std::vector<ATVCamera>::iterator it = m_cameras.begin(); it != m_cameras.end(); ++it)
{
if (!it->m_videoframeOriginal.empty()) {
cv::resize(it->m_videoframeOriginal, it->m_videoFrame, cv::Size(), it->m_videoFx, it->m_videoFy); // resize current frame
}
}
}
void ATVMod::resizeCamera()
{
ATVCamera& camera = m_cameras[m_cameraIndex];
if (!camera.m_videoframeOriginal.empty()) {
cv::resize(camera.m_videoframeOriginal, camera.m_videoFrame, cv::Size(), camera.m_videoFx, camera.m_videoFy); // resize current frame
}
}
void ATVMod::seekVideoFileStream(int seekPercentage)
{
QMutexLocker mutexLocker(&m_settingsMutex);
if ((m_videoOK) && m_video.isOpened())
{
int seekPoint = ((m_videoLength * seekPercentage) / 100);
m_video.set(CV_CAP_PROP_POS_FRAMES, seekPoint);
m_videoFPSCount = m_videoFPSq;
m_videoPrevFPSCount = 0;
m_videoEOF = false;
}
}
void ATVMod::scanCameras()
{
for (int i = 0; i < 4; i++)
{
ATVCamera newCamera;
m_cameras.push_back(newCamera);
m_cameras.back().m_cameraNumber = i;
m_cameras.back().m_camera.open(i);
if (m_cameras.back().m_camera.isOpened())
{
m_cameras.back().m_videoFPS = m_cameras.back().m_camera.get(CV_CAP_PROP_FPS);
m_cameras.back().m_videoWidth = (int) m_cameras.back().m_camera.get(CV_CAP_PROP_FRAME_WIDTH);
m_cameras.back().m_videoHeight = (int) m_cameras.back().m_camera.get(CV_CAP_PROP_FRAME_HEIGHT);
//m_cameras.back().m_videoFPS = m_cameras.back().m_videoFPS < 0 ? 16.3f : m_cameras.back().m_videoFPS;
qDebug("ATVMod::scanCameras: [%d] FPS: %f %dx%d",
i,
m_cameras.back().m_videoFPS,
m_cameras.back().m_videoWidth ,
m_cameras.back().m_videoHeight);
}
else
{
m_cameras.pop_back();
}
}
if (m_cameras.size() > 0)
{
calculateCamerasSizes();
m_cameraIndex = 0;
}
}
void ATVMod::releaseCameras()
{
for (std::vector<ATVCamera>::iterator it = m_cameras.begin(); it != m_cameras.end(); ++it)
{
if (it->m_camera.isOpened()) it->m_camera.release();
}
}
void ATVMod::getCameraNumbers(std::vector<int>& numbers)
{
for (std::vector<ATVCamera>::iterator it = m_cameras.begin(); it != m_cameras.end(); ++it) {
numbers.push_back(it->m_cameraNumber);
}
if (m_cameras.size() > 0)
{
m_cameraIndex = 0;
MsgReportCameraData *report;
report = MsgReportCameraData::create(
m_cameras[0].m_cameraNumber,
m_cameras[0].m_videoFPS,
m_cameras[0].m_videoWidth,
m_cameras[0].m_videoHeight,
0);
getOutputMessageQueue()->push(report);
}
}
void ATVMod::mixImageAndText(cv::Mat& image)
{
int fontFace = cv::FONT_HERSHEY_PLAIN;
double fontScale = image.rows / 100.0;
int thickness = image.cols / 160;
int baseline=0;
cv::Size textSize = cv::getTextSize(m_overlayText, fontFace, fontScale, thickness, &baseline);
baseline += thickness;
// position the text in the top left corner
cv::Point textOrg(6, textSize.height+10);
// then put the text itself
cv::putText(image, m_overlayText, textOrg, fontFace, fontScale, cv::Scalar::all(255*m_running.m_uniformLevel), thickness, CV_AA);
}
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